[Naonak]

Cleric is a great choice in a group setting. Can be very laid back, throwing a heal and buffs out here and there.

Definitely wouldn't recommend a cleric for you if you are looking to XP faster as a duo with a necro/enchanter/druid as they would expect help with roots/stuns etc, a mage would work nicely, as no charm pet breaks. Just sit back and heal the summoned pet.

EQ does have a lot of 6 minute single camps. If you pick the right class/faction you can most likely solo to 60. Will take time, but not out of the question.

Mage is a good second choice. Send pet in, nuke 51% for all the XP, med and repeat.

Necro depending on your abilities. Snare,fear, send pet in, dots and repeat.